default since is today

src/main.rs

@@ -4,7 +4,7 @@ use std::fs::File;
 use std::time::{SystemTime, UNIX_EPOCH, Duration};
 use std::ops::{Add, Sub};
 use clap::Parser;
-use chrono::{TimeZone, Local};
+use chrono::{TimeZone, Local, Timelike};
 
 #[derive(Debug, Parser)]
 struct Flags {
@@ -118,7 +118,7 @@ fn parse_time(since: &Option<String>) -> Result<SystemTime, String> {
             Err(msg) => Err(format!("failed to parse {}: {}", since, msg)),
          }
       },
-      None => Ok(SystemTime::now().sub(Duration::from_secs(60*60*24*7))),
+      None => Ok(SystemTime::now().sub(Duration::from_secs(Local::now().hour() as u64*60*60))),
    }
 }